Pipe-coupling.



` No. 67|,696. Patenlted Apr. 9, |90l.

W. H. HAMMUN.

PIPE CUUPLING.

lApplicatiou Bled Feb4 19, 1900. Ranewed Dec. 28, 1900.)

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No. 67l,696. Patented Apr. 9, |90I. W. H. HAMMON.

PIPE, COUPLING.

(Application led Feb. 19, 1900. Renewed Dec. 28, 1900.) (No Model.) 3Sheets-Sheet 2.

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UNITED STATES PATENT OFFICE.

WVILLIAM H. HAMMON, OF' PITTSBURG, PENNSYLVANIA.

PIPE-COUPLING.

SPECIFICATION forming part of Letters Patent No. 671,696, dated April 9,1901.

Application filed February 19,1900 Renewed December 28, 1900. Serial No.41,400. (No model.)

To @ZZ whom] it may concern.-

Beit known that I, WILLIAM H. HAMMON, a citizen of the United States,residing at Pitts burg, in the county of Allegheny and State ofPennsylvania, have invented or discovered certain new and usefulImprovements in Pipe- Couplings, of which improvements the following isa specication.

The invention described herein relates to certain improvements incouplings for pipes, and has for one object a construction whereby thepipe-sections may be connected whether arranged with their axes in lineor at an angle to each other.

It is a further object of the invention to so construct the coupling asto permit of its application to pipe-sections whose ends are not trulycircular.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings, forming a part of this specification,Figure 1 is a sectional elevation of myimproved coupler, onepipe-section being shown with its axis in line with the axis of thecoupling-sleeve and the axis of the other section being at an angle tothe axis of the sleeve. Fig. 2 is a view similar to Fig. 1, illustratinga modification in the shape or construction of the coupling-sleeve. Fig.3 is an end elevation of the sleeve. Fig. 4 is a sectional detail viewof aportion of the coupler, on an enlarged scale; and Fig. 5 is a frontelevation of one of the follower-rings.

In the practice of my invention the coupling-sleeve is constructed sothat the ends of the sleeve will lie in planes at angles other thanright angles to the axis of the sleeve, as clearly shown in Fig. 1. Theopenings at the ends of the sleeve are made elliptical, the

major diameter between the points a b being greater than the minordiameter c d and being at an angle to the axis of the sleeve, while theminor diameter is at right angles to the axis of the sleeve. By reasonof this elliptical opening the end of a pipesection which is not roundcan be entered into the sleeve and then the latter can be easily forcedto its proper position. It will be understood that as the ellipticalshape of the openings at the ends of the sleeveis due entirely to thefact that the sleeve itself is circular, that the edges of the openingslie in planes at an angle to the axis of the sleeve, and that alldiameters in a plane at right angles to the axis of the sleeve areequal, hence when a pipesection has been inserted into the sleeve thelatter will bear equally at all points on the pipe.

As clearlyshown in Figs. l and 2, the sleeve .is enlarged internally toform pockets or recesses 2 for the reception of outer portions of theends or corners of the pipe-sections when it is desired to connect twosections of pipe whose axes are at an angle to each other.

The sleeve may be made so that its ends will be in converging planes, asshown in Fig. 1, or in parallel orV substantially parallel planes, asshown in Fig. 2.

The end walls of the sleeve are beveled or inclined, as at 3, so as toform seats or bearings or the packingrings. As these inclined faces areformed with reference to the plane in which the ends of the sleeve lieand as these planes are at angles to the axis of the sleeve, it followsthat when a pipe-section is placed in the sleeve with its axis in linewith the axis of the sleeve the pocket formed by the inclined face 3 andthe wall of the pipe will be wider on one side than at any otherpoint-that is to say, the distance between the points is less than thedistance between the points y y, as shown on the left in Figs. 1 and 2.On the other hand, when the axis of the pipe-section forms the greatestangle with the axis of the sleeve, as shown at the right in Figs. 1 and2, the distance between the points 0c" 00l` will be greater than thedistance between the points 'y' y.

In order to efficiently l'ill the packing-ring pockets, which, asstated, vary in transverse dimensions, the packing-rings 4 are madethicker in the direction of their diameters on one side than on theother, as shown in Figs. 1 and 2, so that by merely changing theirpositions around the pipe they will completely fill all portions of thepockets when the pipesections are in extreme positions and will also beefcient, although, perhaps, to a slightly less degree in other positionsof the pipe-sections.

It is preferred to form the packing-ring approximately wedge-shaped invcross-section, its inner wall being straight, so as t0 lie flat on thepipe-section, while the outer face has IOO approximately the sameinclination as the face 2 of` the sleeve. packing-ring is recessed forthe reception of the expanding-rib 5 on the follower-ring 6.

It is preferred that the rib 5 should be approximately cone-shaped incross-section, so

that it will enter and force apa-rt the lips 7,

formed by recessing the rear face of the packing-ring.

bolts 8, it is made elliptical, corresponding with the ellipticalopenings at the ends of the sleeve, as shown in Fig. 5.

It Will be readily understood by those skilled in the art that by merelyturning the sleeve around the pipe-section B maybe inclined in any otherdirection than that shown in Fig.

l and also by increasing the length of the longest part of the sleeve orby shortening the short portion thereof and at the same time increasingthe depth of the pockets 2 the pipe-sections may be arranged at agreater angle to the axis of the sleeve than that indicated in Figs. 1and 2.

I claim herein as my invention- 1. Asleeve for coupling pipes, havingelliptical openings in its ends, the major diameters of said openingsbeing at angles other than right angles .to the axis of the sleeve,substantially as set forth.

2. Asleeve for coupling pipes, having elliptical openings in its ends,the major diameters of said openings being at angles other than rightangles to the axis of the sleeve, said sleeve being internally recessedorenlarged, substantially as set forth.

3. A sleeve for coupling pipes, formed with The rear face of theV itsends in planes at angles other than right angles to the axis of thesleeve, the openings in said ends being elliptical, and the majordiameters of said openings being at angles to the axis of the sleeve,substantially as set forth.

4. 'In a pipe-coupling, the combination of asleeve having ellipticalopenings in its ends,

i* the major diameters of said openings being In order that thefollower-ring may be drawn up against the packing-ring by the at anglesother than right angles to the axis of the sleeve, a packing-ring and afollowerring `having an elliptical or oval internal contour,substantially as set forth.

5. In apipe-coupling, the combination of asleeve having ellipticalopenings in its ends, the major diameters Iof said openingsbeing at anangle other `than a right angle to the axis of the sleeve, apacking-ring diametrically thicker on one side than on the other and afollower-ring having an elliptical or oval internal contour,substantially as set forth.

6. In a pipe-coupling, the .combination of a Sleeve having its en dslying in converging planes, a packing-ring and a follower-ring having anelliptical'or oval internal contour, substantially as set forth. 7. In apipe-coupling, the combination of a sleeve having its ends lying inconverging planes, a packing diametrically thicker on one side than `theother, and a follower-ring having an elliptical or oval internalcontour, substantially as set forth.

In testimony whereof I have hereunto set my hand.

WILLIAM H. HAMMON.

Witnesses:

DARWIN S. WoLooTT, G. I. HoLDsHIP.

